Rationale Videolaryngoscopes are being widely used as first choice for tracheal intubation. Anatomic and physiologic changes during pregnancy place the parturient at increased risk for airway management problems. Obstetric patients with pre-eclampsia have already anticipated difficult airway. The predictors of difficult direct laryngoscopy are not applicable to predict a difficult videolaryngoscopy.

Title To compare intubating conditions with Kingvision videolaryngoscope and conventional laryngoscope in pre-eclampsia patients requiring general anaesthesia for caesarean section.

Objectives To evaluate and compare the difficulty encountered by anaesthesiologists by Kingvision videolaryngoscopy vs conventional laryngoscopy in terms of Cormack Lehane grade laryngoscopy time tube insertion time time for successful intubation intubation difficulty score percentage of difficult intubation and success rate of intubation in the first attempt.

Methods This prospective, randomised study will be conducted in the Department of Anaesthesiology and Critical Care, UCMS and GTBH from March 2026 to December 2026. Pre-eclampsia patients of age more than18 years and ASA physical status 2 3 with Mallampati score 2 3 scheduled for caesarean section requiring General Anaesthesia  with Tracheal Intubation will be enrolled. Patients requiring awake intubation and refusing to participate will be excluded. Patients will be randomly allocated to one of the two groups. Standard anaesthesia technique will be followed and intubation will be performed using a Kingvision videolaryngoscope  or conventional Macintosh laryngoscope depending on the group allocated.

Sample size and Statistical analysis According to a previous study it has been reported that 79.6 per cent patient in whom intubation was done using Kingvision videolaryngoscope  had CL grade 1 views and 33.8 per cent patient had CL grade 1 views in Macintosh laryngoscope group in obstetric patients. To estimate the same difference using two-tailed test at alpha equal to 5 per cent and power 80 per cent minimum  sample size of  22 in each group is required.